Defensive Magical Theory

From UnknowableWiki

Defensive Magical Theory is a book written by Wilbert Slinkhard and requested by Dolores Umbridge for her Defense Against the Dark Arts class (OP9).

In hopes of keeping her students from performing any kind of magic, Umbridge chose this particular book, telling them that, if they studied enough theory, there would be no trouble when asked to perform spells or counter-courses at the OWLs examinations (OP12).

The book includes an index: chapter one is entitled "Basic for Beginners" (OP12); chapter two, ""Common Defensive Theories and their Derivation" (OP15); chapter three (which begins on page 34) is titled "The Case for Non-Offensive Responses to Magical Attack" (OP17); chapter thirty-four, "Non-Retaliation and Negotiation" (OP29).

The author expresses his opinion that counter-jinxes aren't named properly, because he believes that "counter-jinx" is a 'just a name given to jinxes to make them sound more acceptable' in chapter fifteen (OP15).